I have 117,000 kilometers.try getting a tune up. I'm not sure how many miles are on your car but try checking all the fluids, spark plugs, throw in some fuel system cleaner, stuff like that. Although those results aren't all that bad and a lot of it can be from your driving habits. If I try I can get 40 mpg whether city or highway as long as I care soley about fuel economy. If I don't care and drive non-chalantly I can get as low as 20 probably but I usually don't.
sounds like a diesel? You got misfire, that would explain crappy MPG also. Don't rely on a check engine light, gotta use your ear bro, there is no reason a gas engine should sound like a duramax unless something is F***ed upWhy am I only getting, 20 mpg in the city, and and 30 mpg on the highway @ 60mph. 5 speed manual, 2.2L stock. The car kinda sounds like a diesel when idling, but not check engine light! In fifth gear for highway with cruise set.